CN2255710Y - Pulse gas-charging device for electric arc plasma generator - Google Patents
Pulse gas-charging device for electric arc plasma generator Download PDFInfo
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- CN2255710Y CN2255710Y CN 96207511 CN96207511U CN2255710Y CN 2255710 Y CN2255710 Y CN 2255710Y CN 96207511 CN96207511 CN 96207511 CN 96207511 U CN96207511 U CN 96207511U CN 2255710 Y CN2255710 Y CN 2255710Y
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- plasma generator
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- arc plasma
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Abstract
The utility model relates to a pulse gas-charging device used for prolonging the service life of a tubular electric arc plasma generator, comprising a pulse mechanism, a flow regulating valve, a pressure gauge and a critical nozzle, wherein a gas path is composed of a main pipeline and two branch pipelines, wherein a pulse flow control device is arranged in one branch pipeline through series connection, by which pulse flows with different frequencies and amplitudes are obtained; under the action of two pulse flows with equal amplitude and opposite phase, a position of a rear electrode arc-root of the tubular electric arc plasma generator can generate simultaneous axial movements. The utility model has the advantages of enlarging arc-root working face, decreasing electrode burning loss, and prolonging electrode operating life.
Description
The utility model is the relevant pulsation inlet duct that improves arc heat plasma generator electrode working life.
Traditional tubular arc plasma generator adopts the method for constant current amount air inlet.The working range of generator rear electrode arc root concentrates on a narrower zone, for high power plasma generator, because arc root place electrode surface density of heat flow rate and current density are all very big, cause that this part surface density of heat flow rate of electrode and current density are all very big, cause the serious scaling loss of this part surface of electrode.In this case, promptly use the water under high pressure forced water cooling, the working life of electrode also is difficult to satisfy the requirement of the medium-term and long-term continuous operation of industrial production.Result of study to arc plasma generator electrode erosion mechanism shows, in this class generator, prolong the working life of electrode, except the material that adopts high thermal conductivity, improve electric Arc Motion speed and improve the measure of cooling effect of electrode, also must enlarge the arc root in axial working range.The method of utilizing the pulsation air inlet is the effective ways that enlarge arc root working range, prolongation electrode working life.Nineteen ninety-five, (V.N.Borisynk) [ISPC-12, p1601] such as Byelorussia scholar Bu Lisen section reported some preliminary experiment results that done aspect the expansion arc root service area in the 12 international plasma chemistry meeting.The author adopts magnetic, two kinds of methods of gas to expand the arc root in the literary composition, owing to be confined to experimental study, does not provide the concrete scheme and the structure of device in the literary composition.
The purpose of this utility model is to provide a kind of novel arc plasma generator pulsation inlet duct.The amplitude and the frequency of the pulse pneumatic that this device produces are all adjustable, can be used for expanding the arc root working region of arc plasma generator rear electrode, to prolong the electrode working life.
Problem at the prior art existence, the utility model adopts two gas inlet ducts, comprise that main pipe rail, total flow regulate and be connected in critical spray nozzle thereafter, critical spray nozzle connects two fens pipelines, two gas accesses dividing pipeline to connect plasma generator respectively, serial connection is used to regulate air flow rate and makes it make the pulsating flow control device of periodically-varied in the pipeline therein.
Fig. 1 is the connection layout of the utility model and arc plasma generator.
Fig. 2 is the gas structure drawing of device of the utility model embodiment.
The utility model architectural feature, the course of work and enforcement are done one introduce in detail below in conjunction with accompanying drawing 1, Fig. 2.The utility model is formed and is connected as shown in Figure 1, comprise: total flow adjuster valve 1, the Pressure gauge 2 and the critical spray nozzle 3 that is connected with adjuster valve 1 outlet that show gas pressure, the outlet of critical spray nozzle 3 connects two pipelines, be connected in series pulsating flow adjuster valve 4 on a pipeline therein, the outlet of pulsating flow adjuster valve 4 connects the inlet of gas device 5, and the outlet of gas device 5 another pipeline that 3 outlets are connected with critical spray nozzle connects two gas accesses of arc plasma generator 6 afterbodys respectively.When the utility model is worked, total gas couette valve 1 provides the air-flow of stability of flow through critical spray nozzle 3, effect owing to the pulsating flow adjuster valve 4 gentle artery flushing devices 5 that are connected in series at a pipeline, the air-flow that makes this pipeline transport to arc plasma generator 6 afterbodys inlet is done periodic pulsatile change, because total gas flow keeps stable by the effect of total flow adjuster valve 1 and critical spray nozzle 3, therefore the gas flow in the second pipeline also forms pulse pneumatic simultaneously, and it is consistent in frequency and article one pipeline, and phase place is opposite, it is identical so just to form two bursts of frequencies in arc plasma generator 6, the pulse pneumatic that phase place is opposite, its arc root position is produced periodically move axially, thereby enlarged arc root working face.
The pulsating flow control device can adopt by pulsating flow adjuster valve 4 and connected gas device 5 and form among the embodiment of the present utility model; Palsating equipment 5 connects the burning voltage 7 that is used to make its steady operation, and pulsating flow adjuster valve 4 is used for changing the ripple amplitude of two pipeline pulse pneumatics, and the frequency of pulse pneumatic then is to be regulated by gas device 5.Figure 2 shows that the structural representation of gas device 5.The housing of gas device 5 by cylindrical shape before main body 11, back main body 21, connect before the coupling flange 16 of main body 4 and back main body 21, the front end housing 10 of the main body 11 and back main body 21 other ends and bonnet 24 constitute before laying respectively at; Periphery wall along preceding main body 11 has groove 27, has plurality of rows pore 14 in groove 27; The outer airtight guide rings 12 that are provided with of groove 27 are provided with the interface 13 of giving vent to anger on guide ring 12; Two joints 26 that communicate with back main body 21 inner chambers are set on the bonnet 25; A side that connects front end housing 10 in preceding main body 11 is equipped with fore bearing 9 and the bearing pedestal 8 that is used to support axis 16, the other end of axis 16 places in the rear bearing 18 at coupling flange 17 centers, and connect with motor and reducing gear 22 on being fixed on back main body 21 interior motor supporting disks 20 by shaft coupling knot 19, on axis 16,, be provided with and the preceding main body 11 inwalls friction tight eccentric wheel 15 that slides corresponding to the position of preceding main body 11 outer wall grooves 27.For preventing that impurity from entering, the position near bonnet in the main body 21 of back is provided with a screen pack 23.The power line of motor and deceleration device 22 is connected with stabilized power supply 7 by 26 inputs of a joint, should seal around the power line.Gas another joint 26 inputs on bonnet 25 by 4 outputs of pulsating flow adjuster valve, gas through the hole on the screen pack 23, motor supporting disk 20, and coupling flange 17 on hole 28 arrive the cavity at eccentric wheels 15 places, output to arc plasma generator by round 14 and joints 13 in the groove 27 again.Because between eccentric wheel 15 and the preceding main body 11 is a kind of slidably tight fit, when eccentric wheel 15 during by motor and deceleration device 22 driven rotary, periodically stop up one by one and open recess 27 in steam vent 14, thereby in the output gas circuit, obtain periodically variable pulse pneumatic.Change the rotating speed of motor and deceleration device 22, the frequency that can regulate pulse pneumatic.
Following table has provided in the tubular arc plasma generator contrast that one group of canonical parameter when adopting the utility model and arc root district expansion effect and prior art tell on
| Arc voltage (volt) | Arc current (peace) | Total flow q 0(Grams Per Second) | Prop up gas circuit flow q 1(Grams Per Second) | Prop up gas circuit flow q 2(Grams Per Second) | Ripple frequency (1/ second) | Rear electrode arc root sector width (millimeter) | |
| Pulse pneumatic is arranged | 410 | 450 | 10 | 8-10 (pulsation) | 2-0 (pulsation) | 3 | 30-40 |
| The pulse free air-flow | 410 | 450 | 10 | 8 (constant) | 2 (constant) | 0 | 5-10 |
As seen from the above table, behind employing the utility model, the width in arc plasma generator arc root district is greatly expanded, the electrode surface temperature peak is reduced, so electrode erosion is also less, thus the working life that has prolonged electrode.
Claims (4)
1, a kind of tubular arc plasma generator inlet duct, comprise main pipe rail, total flow adjuster valve and a connected critical spray nozzle, critical spray nozzle connects two fens pipelines, two gas accesses dividing pipeline to connect plasma generator respectively is characterized in that serial connection is used to regulate air flow rate in one of them pipeline to make it make the pulsating flow control device of periodically-varied.
2, plasma generator inlet duct according to claim 1 is characterized in that the pulsating flow control device comprises the periodically variable gas device of pulsating flow adjuster valve and connected control airflow cross section of a control throughput.
3, plasma generator inlet duct according to claim 2, the housing that it is characterized in that the gas device by cylindrical shape before main body, back main body, connect before main body and back main body coupling flange, lay respectively at before the front end housing and the rear end cap of main body and the back main body other end constitute; Periphery wall along preceding main body has groove, has steam vent in groove, and the outer airtight guide ring that is provided with of groove is provided with the interface of giving vent to anger on guide ring; Two joints that communicate with back main body inner chamber are set on the bonnet; A side that connects front end housing in preceding main body is equipped with fore bearing and the bearing pedestal that is used to support axis, the other end of axis places in the rear bearing at coupling flange center, and by shaft coupling knot be fixed on back main body in motor and reducing gear on the motor supporting disk connect, on axis,, be provided with and the preceding main body inner wall friction tight eccentric wheel that slides corresponding to the position of the outer wall groove of preceding main body.
4, plasma generator inlet duct according to claim 3 is characterized in that the position near bonnet is provided with a screen pack in main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96207511 CN2255710Y (en) | 1996-04-05 | 1996-04-05 | Pulse gas-charging device for electric arc plasma generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96207511 CN2255710Y (en) | 1996-04-05 | 1996-04-05 | Pulse gas-charging device for electric arc plasma generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2255710Y true CN2255710Y (en) | 1997-06-04 |
Family
ID=33891773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96207511 Expired - Fee Related CN2255710Y (en) | 1996-04-05 | 1996-04-05 | Pulse gas-charging device for electric arc plasma generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2255710Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100525552C (en) * | 2006-03-10 | 2009-08-05 | 哈尔滨工业大学 | Gas working dielectric conversion device capable of working under bad circumstances |
| CN105376922A (en) * | 2015-12-10 | 2016-03-02 | 北京航天益森风洞工程技术有限公司 | Plasma spray torch equipment with automatic gas adjustment function and adjustment method for plasma spray torch equipment |
-
1996
- 1996-04-05 CN CN 96207511 patent/CN2255710Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100525552C (en) * | 2006-03-10 | 2009-08-05 | 哈尔滨工业大学 | Gas working dielectric conversion device capable of working under bad circumstances |
| CN105376922A (en) * | 2015-12-10 | 2016-03-02 | 北京航天益森风洞工程技术有限公司 | Plasma spray torch equipment with automatic gas adjustment function and adjustment method for plasma spray torch equipment |
| CN105376922B (en) * | 2015-12-10 | 2018-02-13 | 北京航天益森风洞工程技术有限公司 | The plasma gun equipment and its adjusting method of realizing automatic regulation of gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |